Cloth-shearing machine.



No. 65!,"3. Patented lune 5, I900. H. S. GREENE.

CLOTH SHEARING MACHINE.

(Application filed July 1 1897.)

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Wbnesse: [7206726071- S. MW W Nu. 65l,|l3. Patented lune 5, I900. H. S. GREENE.

CLUTH SHEARING MACHINE.

(Application filed July 1, 1897.)

2 Sheets-$heet 2.

(No Model.)

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0.. WASHINGTUN n c FFIC PATENT HARRY S. GREENE, OE IVOONSOCKET, RHODE ISLAND, ASSIGNOR TO THE \VOONSOCKET NAIPING MACHINERY COMPANY, OF SAME PLACE.

CLOTH-SHEARING MACHINE.

SPECIFICATION forming part of Letters Patent No. 651,113, dated June 5, 1900. Application filed July 1, 1897. Serial No. 643,101. (No model.)

To all whom it may concern:

Be it known that I, HARRY S. GREENE, a citizen of the United States, residing at Woonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Cloth-Shearing Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

It has been proposed heretofore to apply to the cloth rest or bed of a cloth-shearing inachinenamely, to the edgethereof which is next adjacent to the rotary cutting cylinder or revolver-a yielding surface or cushion, the object of the said yielding surface or cushion being to permit any knot orhard surface within or under the cloth or fabric being operated upon to sink or be depressed into the elastic or yielding cushion. This obviates injury to the cloth or fabric such as would occur if the yielding surface or cushion were not employed. In the latter case the knot or other hard surface within or under'the cloth or fabric, as aforesaid, would raise the face of the cloth into such prominence at the place where such knot or enlargement occurs that the rotary cutter or revolver either would operate to shear off more of the material at the surface of the cloth than is desirable or might even cut a hole in the cloth or fabric. One form of the yielding surface or cushion aforesaid is presented in the United States Letters Patent to E. Martin and T. F. Drake, No. 450,028, granted April 7, 1891. In the said patent a length of india-rubber (shown there-' in as cylindrical in cross-section and hollow. or tubular) is shown and described as placed in a groove" formed in the apex or Working edge of the cloth rest or bed and extending longitudinally of the latter.

Machines for shearing cloth are provided in the case of certain classes thereof with means whereby the operative length of each end of the cloth support or rest is varied automatically, according as the cloth shifts from side to side in the machine, such means being controlled by the cloth itself and the entire operative length of the said support or rest being maintained equal to the width of the portion of the cloth which is to be sheared. Instances of constructions by means of which this result is secured may be found presented in the United States patents to A. 'Woolson, No. 7,407,granted May 28,1850,and No.43,878, granted August 16, 1864. The object of such constructions is to prevent the lists or selvages of the cloth being operated on from being attacked or injured by the shearing devices, and consequently the automatic devices by which the above action is secured are known as automatic list or selvage protectors. I-Ieretofore in machines having an automatic adjustment of the character to which reference has been made it has been customary to employa series of small slides at each end of the cloth support or rest, the said slides having capacity for independent vertical movement and being operated by means of cam-bars and connected operating devices therefor, by means of which the said slides are brought successively into position to support .the cloth by their upper ends or are lowered.

away from the operative position.

My present invention relates to clothbeds 0r cloth-rests having applied thereto yielding cushions or surfaces such or substantially such as aforesaid.

The general object of the invention is to provide a novel and improved construction of cloth bed or rest. One special object of the inventionis to provide a novel and improved construction of cloth bed or rest in which a yielding cushion or surface, such as has been referred to hereinabove, is combined with an improved form of automatic list or selvage protecting devices for the purpose of attaining the general results which are provided for in the patents to Woolson, of which mention has been made.

The invention will be described first with reference to the accompanying drawings, in which latter I have illustrated the best embodiment of the invention whichI have yet contrived, after which the distinguishing characteristics of the invention will be particularly pointed out and distinctly defined in the claims at the close of this specification.

In the drawings, Figure 1 is a view in vertical cross-section on the dotted line 1 1 of Fig. 3 looking in the direction that is. inclicated by the arrows at the end of such line. Fig. 2 is a view in vertical longitudinal section on the dotted line 2 2 of Fig. 3 looking in the direction that is indicated by the arrows at the end of such line. Fig. 3is aview in plan of the devices that are shown in Figs. 1 and 2. Fig. 4 is a perspective of one end of the cloth bed or rest and the movable slide which is connected therewith, the yielding cushion being omitted.

1 designates the cloth-bed or cloth-rest proper. Along the upper edge of the said cloth-bed or cloth-rest is formed a concavity or hollow 2.

3 designates the yielding cushion to which reference has been made hereinabove, it being received in the said concavity or hollow 2 in the working edge of the cloth-bed or cloth-rest.

4 4 designate slides which are applied to the opposite ends of the cloth rest or support 1, the said slides being movable in a direction longitudinal of the latter, so as to enable the operative length of the cloth-bed or clothrest, or of either end thereof, to be increased or diminished within certain limits, as desired. These slides support the yielding cushion 3 at and beyond the ends of the clothbed or cloth-rest 1, the additional portion of the said yielding cushion which is sustained by each of the said slides varying in length, according to the position which is occupied by such slide. For convenience in construction and in applying the slides I rabbet each end of the cloth bed or rest 1 for a suitable distance from the extremity thereof, as at 5 5, and I form in the end of the cloth-bed or cloth-rest intermediate the rabbets a longitudinallyextending slot or slots 6. Each slide is formed with opposite side portions 7 7, which fit the rabbets 5 5, and with one or more intermediate tongues or extensions 8, fitting within the slot or slots 6. The upper edge of the tongue or tongues 8 I form flush with the surface of the hollow or concavity 2 of the cloth-bed or cloth-rest, the said hollow or concavity being continued, in effect, throughout the length of the slide, so that whatever may be the position of the latter it forms simply a continuation of the cloth bed or rest, and at all points out to the extremity of each slide the yielding cushion is supported perfectly no matter to "what extent the slide may be projected outwardly. As will be understood, the yielding cushion will be upheld at each end of the cloth bed or rest as far as the outer extremity of the slide, whatever may be the position of the latter, so that up to the point occupied by the said extremity the cloth shall be subjected to the action of the shearing devices. Beyond the said extremity of the slide the corresponding extremity of the yielding cushion will droop so as to leave the adjacent list or selvage of the cloth unsupported, whereby it will be left free from the action of the shearing devices. In order to sustain the extremities of the yielding cushion while they project beyond the outer ends of the movable slides4 4, I provide gutter-shaped supports 9 9, which may beattached to the slides, but are herein shown as attached to the ends of the bed or rest 1 and extending outwardly through openings at 10 in the ends of the slides. (See Fig. 4.) For the purpose of effecting automatically the adjustment of the slides, which is necessitated by the varying positions occupied in the machine by the edges of the cloth which is being operated upon, I combine with the said slides 4 4 the brackets 11 11, each of the said brackets having pivotally connected therewith by means of the pin or screw 12 the pair of toothed feelers 13 13 (which are engaged by the cloth being operated upon) and intermediate detent'plate 14, the latter having pin-and-slot connections at 15 with the said feelers 13 13. The detentplates 14 14 cooperate with the reciprocating rack 16, the latter being actuated in practice by any suitable means of convenient character and construction. I do not regard it as necessary to illustrate the said means herein, and it may be such as is presented in either of the patents to Woolson which have been mentioned.

I claim as my invention- 1. The combination with the cloth bed or rest, and 'the yielding cushion mounted on the working edge of the same, of the slides at the ends of the said cloth bed or rest, each slide providing in conjunction with the corresponding fixed end of the cloth bed or rest an interlappin g series or plurality of bearings side by side on which the corresponding end portion of the cushion is supported, substantially as described.

2. The combination with the cloth bed or rest, and the yielding cushion which is applied to the working edge of the same, of the slides which are applied to the ends of the said cloth bed or rest and which serve to sustain the end portions of the said yieldin g cushion and are movable longitudinally of the said cloth bed or rest, and supports 9, 9, projecting beyond the said slides to receive the extremities of the yielding cushion, substantially as described.

3. The combination with the cloth bed or rest, and the yielding cushion which is applied to the working edge of the same, of the slides which are applied to the ends of the said cloth bed or rest and serve tosustain the end portions of the said yielding cushion, and automatic devices controlled by the cloth being operated upon and acting to adjust the position of the said slides longitudinally of the cloth bed or rest, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

HARRY S. GREENE.

Witnesses:

CHARLES H. McFEE, GEORGE W. GREENE.

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